A circular, single or multipiece item, metallic or nonmetallic in composition, designed to be fitted in a circumferential groove in a piston and to spring outward against the cylinder wall to function as a seal or wiper. It is supplied in various cross-sectional shapes and is cut through at one point to allow for installation in the piston ring groove. It may include an expander. Excludes packing, preformed; retainer, oil seal; retainer, packing; ring, retaining; ring wiper; and seal ring, metal.
Classification: Parts for steam turbines
NSN 5965-01-633-8849
NSN 5945-00-827-3699
NSN 6320-01-242-8355
NSN 4140-01-446-5720
NSN 5975-01-597-3840
NSN 5930-00-189-0635
NSN 6135-00-231-7257
NSN 7035-00-541-8516
NSN 5998-01-568-4849
NSN 5910-00-951-2638
NSN 5920-00-880-6581
NSN 4140-01-220-7697